Mold breaking and transporting device



March 17, 1931. c. NELSON 1,797,176

MOLD BREAKING AND TRANSPORTING DEVICE Filed Dec. 15, 1928 2 Sheets-Sheet l 1 Vim: C. Nelson March 17, 1931. M. c. NELSON 17,97,176

MOLD BREAKING AND TRANSPORTING DEVICE Filed D60. 15, 1928 2 Sheets-Sheet. 2

at 134 1 glwomtw Max 6. 215cm Fig.3

iUNiT l at ented' Mar. 17, 1931 I p MAX olnnLson, or Milton, OHIO, AssIGiaon'romi-ineoonynnn TIRE 'ecnuniinn', oo1vr-.

PANY, OIF'A'KRON, euro/A CORPORATION or 01:10,

MOL EAKING an!) rnnnsron'rine DE Application filed Dece mber lfi, 192s. SerialN o. 326,370.

' c This invention relates to apparatus forhandli'n'gsectional tire molds and it has particular relation to apparatus of the above designated character which shall be especially applicablefor transporting the molds and separating the sections thereof.

Anobjectof the invention is to provide apparatus for separating the sections of a tire mold followingthevulcanization of a tire therein; v r p Another object of the invention is to provide apparatus for transporting theentire mold or asection thereof;

. Heretofore, following the vulcanization of a I 1 tire in a mold composed of upper and lower sections, it has been the practice to separate thesections in order'to remove the tire, by a manual'operation comprising the insertion of one end of an elongate bar into an opening tion away therefrom. V This operation required considerablejmanual force and, 1n ad- I dition, the services of more than one workman in order that the mold wouldnot bedisthe sections. Transportation of the mold or a section thereof was effected byvario'us types'of hoisting devices whichare well knownand hence need not be described. 1

I This-invention has for one'of its purposes obviation of the manual operation of separating the molds inthe afore-described manner,

and employmentof mechanical means instead. One embodiment of' the invention contemplates the use of members pivoted to the cylinder of a fluid reciprocatorymotor,.

which members have hook portions on their lowerends adapted to engage oppositesides bers and likewise projecting between the;

I flangeson the mold. Movement of the piston of the membersrelativelky about thBlIfplVOliS and- ,hence, engagement respectively of the rod causes a movement of the hook portions "the ceiling of a building.

hook portions and the, flanges of the mold,

thereby separating the sections. In addition,-

the invention contemplates the use of a second" motor supported on ajtramway, whose piston rod is connected to the cylinder. 'of the'first ,motor, whereby the 'mold one section thereof may be transported from one place to an other. f r 1 v1. For a. better understanding'of the inven-- tion, reference may now be had to the accompanying drawings, forminga part of-the specification, in which: 1

Fig; 1 is an'elevationa'lview of a device constructed according to-one embodiment of the invention; N

'Fig. 2 isa cross-sectional view of theconstruction shown by Fig. 1, as takenisubstantiallyal'ong line IIIl thereof;-'and Fig. 3 illustrates-a modified form of resilient connection between certain-ofthe mold engaging'members. a I

. Referring to Fig. 2', a cylinder 10,'having an apertured pair of-ears 11 and12 projecting from its upperend, ispivotally connectedby apin- 13 to a suspension member 15. -The I upper end ofthemember15 is enlarged and placed accidentally'during the separation of bifurcated to provide a pair of'upwardly e'x-- tening arms 17 and :18, in the upper'en'ds'of Of a an which is secured in anysuitable jmannerto' The cylinder 10 is prov'ded' with a piston 40 and pistonrod 41, the'latterofwhich projects through 'ahead l2, secured to the lower end of; the cylinder by a plurality of bolts projecting through openings in 'a flange 48011; the head and engaging a similar flange-44 on the cylinder. A stufling box 50', through which the piston rod alsoprojects. is in turn secured to the head by bolts 51-that project through a flange '52 on the former and engage the latter. The lower end of the piston rod is which: conically faced rollers '19and 22 are; rotatably supported by pins 1 24:; and 25." These rollers-are disposed between npperand lower flanges 30 and 81 and on opposite sides threadedyasindicated 'at- 55 d g g I threaded opening 56 in a'boss 57 integral with a second-"cylinder 58. c The latter is slidablyj supported in a bearing 60 provided between V ioo the lower ends of a pair of vertically disposed arms 61 and 62 which, at their upper ends, are 7 sure supply conduit 71 and a discharge conduit 72,is operated by a rotatable rod :7 5 that projects through a boss bearing 7 6 formed in a-flange '77 on the arm 67. Operation of the rod 75 is facilitated by a handle secured to its outer-end. if

Like the cylinder 10, the clyinder 58 is provided with a. piston and a piston rod 91,.the latter-of which projects through a cylinder'l1ead'92 having an apertured flange 93, secured by bolts 94 to the cylinder, which bolts project through the apertures in the flange andengage a flange 95 on the cylinder. The piston rod' also is provided with a st-nfling box secured to the cylinder head 92, by

bolts 101 projecting. through an apertured flange 102 on the box and engaging the cylinder head. Conduits 105 and 106, communicating with the lower and upper ends of the cylinder .58 are, in turn, connected to a four way valve 108, identical with theaforemen respectively arethreaded. .These pinspivtioned :valve 70, and which is operable by a rod 109 pivotally supported in a boss 111 in the flange 7 7 and having a handle on its outer end. Below this valve androd, the laterally projecting portion 67 of thearm 61 is provided with an offset portion1112 having a handle 113 formed in its lower end for facilitating movement of, the aforedescribed construction on the tramway. r a

As bestlshown by Fig. '1, the cylinder 58,011

diametrically opposed sides,,is provided-with I osses 1.15 and ll'fiinto which pins 118 and 119 Qtally-support a bifurcated member having upwardly projecting arms 126'and 129 provided with apertures in their upperends engaging the pins. The member 130 extends downwardly and obliquely to the vertical plane in which the cylinder 68 is disposed, and is provided with a'pair of spaced arms 131'and 132 directed inwardly attheir lower ends to. provide hook portions 133 and 134. Thelatter portions are connected adjacent their ends by an integral reinforcing bar 135, provided with .a handle 136 for facilitating movement of the member 130. As best shown by Fig. .2, the hook portions 133 and.

134 .projectbetween spaced flanges 230 and 231 formed on the outerperiphery of upper and lower sections 232 and 233 ofa tire mold.

A second bifurcated arm 150, extending downwardly and oppositely to the arm 130,

cylinder 163 pivoted to the arms 131 and 132 also is provided a pair of arms 151 and 152 disposed outwardlyof the arms 126 and 129 and provided with apertured upper ends engaging the aforesaid pins 118 and 119 Like the arm 130, the arm 150 is provided with a pair of depending arms .154 which are curved inwardly toward the arms 133 and 134 to provide a pair of hock portions 156. These hook portions also project between the flanges I23021'1Cl231b11 the mold but on the side thereof opposite the portions 133 and 134.v The lower ends ofthe arms 154 are reinforced by a connecting bar15'7, which is provided with a handle 158-similar to the handle 136 on tl e member I The arms 130 and are 'yiel'dingly connected together intermediate their ends by a piston and cylinder device 160 comprising a rod 161 pivoted at one end 162 to the arm 154 and having apiston 15'5 on-its other end, which piston is slidably mounted within a indicated at 164. Opposite ends of thel cylinder 163 are connected by conduits 165 and 166 to a four-way Valve 16? mounted on othe'laterally extending portion 67 of-the arm 61. Like the valve 72 and 108, the valve 167 1s provided with an operatingrod 168 rotatably mounted in a boss i169 .onthe frame :por-

tion 67', which rod is provided with an operating handle 170. It is evident when fluid under pressure is admitted into the end of the cylinder 163;adjacent the arm 150, that the piston 155 will be moved toward the other end of the cylinder and hence, the arms 130 and 150 forcefully movedtowards each other,

thus causing the hookportions at their lower ends to engage the mold firmly. On the other hand, when fluid under pressure is admitted into the opposite end of the cylinder, the

arms 130-and 150. will be moved farther apart,

thus causingthe hook portions on their lower ends to bedisengaged from the mold.

The lowerend of the piston rod 91 is threaded, as indicated at 180, andengages a bifurcated coupling 181 having depending apertured ears 182 and 'l83through which a pin 184 projects. A rod isprovided with an eye 191 at its upper end pivotally mounted on the pin 184 adjacent the ear 182, while its other end is threaded into a bifurcated coupling 192 having" depending apertured ears .193 and 194. In'turn an arcuate arm 195,

provided with an eye 196at its upper end, is pivoted. on a pin 197 extending through the apertures in the ears 193 and 194, while its opposite end extends between the lower ends of the arms 131 and132 and is pivotally securedtherebetween-bya pin 200 projecting through all of these arms. Like-the arms 131 and132, the arm 193 beyond the pivot- 200, is provided with a hook portion 201, extending. substantially in parallel relation to the hook portions 133 and 134 of the former,

. between the flanges 230 and 231 on the mold.

The pin184 also pivotally supports a de-* pending rod 210 having an-eye 211 at its upper end throu-gh which the pin projects, The lowerend of the'rod 210is threaded to engage a bifurcated coupling 215 which, like the coupling 192, is pivotally secured to an arcuate' arm 216 similar tothe arm 195 but extending ina, direction opposite thereto.

. The lower end ofthearm 216 is pivoted between thelower ends of the arms 154 by a pm 217 which extends through apertures in all three arms. Beyond the pivot 217, the arm 1 216 is directed inwardly to provide hook portion 218 which, like the hook'portions 156, is disposed 1 An alternative means" for connecting the arms 130 and 150, which is illustrated by Fig.

3, comprises a rod .250threaded at one end ed screw 252, the latter of which in turn is as indicated at 251, into an internally threadthreaded into a coupling 2,53 pivoted to the arm 130, as indicated at 254;. The other end of the rod 250 projects through an apertured flange 260 of a bracket 261, pivot-ally secured to the arm 150, as indicated at 262. Aspring 265, encircling the rod 250 and secured at opposite ends to the flange 260 andto a collar 266 rigidly fastened by a set screw 26? on the rod, provides a resilient connection between the arms 130 and 150.

, In operation of the above described mechanism, assuming that a tire in the mold has been vulcanized and it is desired to separate the sections 232 and 233 of the mold, fluid under pressure is admitted into. the conduit 105 by operation of the handle 110 and con- I sequently the valve 108, which results in 217 respectively. .This causes the hoolrpor- 'tions201 and 218' of the arms 195 and 216 movement of the piston 90 upwardly and the arms 195 and 216 about their pivots 200 and respectively, to engage forcibly the flange 230 on the upper section 232 of the mold, while,

at the same time, the hook portions 133, 134

and 156 on the arms 131, 132 and 154:, respec tively, engage theflange 231. on the lower section 233 of the mold. Consequently, the upper section of the mold is separated from the lower section thereof. If it is desired to transport theupper section 232 to a diflerent position, the handle is turned thereby operating the valve 70, to admit fluid under pressureinto the lower end of the cylinderIO, which results in "a bodily movement of the cylinder 58 and the parts of the mechanism connecting it to the upper section 232 of the I mold- Thereafter, the entire mechanism m'ent.

201, 156 and .218 from the flange 230 is.

maybe moved. along the tramway 30, the handle 1'13 serving to facilitate this move- Release of the hook portions 133, 134,

elfected by operationof the valve 167 to i admit fluid under pressure through the coni duit 166, thus causing the-fluid cylinder debetween the flanges 230 and 4 231 of the-mold.

vice'160 toseparate further the arms 1'30; and

150. It is, of course, to be understood that when another mold is to be'separated,it is 'only necessary to operate the valves 7'0 and 108 to lower the cylinder 58 and the piston therein, whereafter-by admitting fluid under. pressure into the conduit 165 and the cylinder 163', the arms 130 and'150 will be moved'toward" each other and the: aforementioned.

hookv portions brought. into. engagement with.

the mold between the flanges thereof.

F romj the foregoing description, it is; apparent that a simple and eflective device has" been fprovided for separating the upper and lower; sections of a tire mold: following the ferred forms which the invention may. as-.

mine and have described those forms in detail, .it:will be apparenttothose skilled in. the art that the invention is not. so limited but that various modifications may be made therein without. departing from the spirit of the invention or from thescope of theappended claims. lVhatI claim isi -1. A device for separating sectional molds comprising a plurality'of members adapted tostraddlethe mold with their ends engaging a section'thereof, means pivoted to the members and adapted to engage another section of themold, and means for moving said, means and members relatively. 1

-;2.,"A device for.separatingsectional molds comprising a plurality o f mem'bers adapted to. be' disposed. at spaced positions about the mold and to engage asection thereof, means Although I have illustrated only the :pre-

pivoted to each of the members and adapted to'engage anotherjsection of the mold," and means for moving said means and members relatively. r i r 3. In combination, a motor, oneor more members pivotally connected ,to a stationary part of themotor and having means for engaging a sectionofa sectional-mold, andone. or more members pivotedrespectively to the f first mentioned members-and having means for engaging another'sectionof-the mold, the

connectedtoa movable part of the'motor.

4. In combinatiom'a motor, aplurality of members connected to a stationary part of the 1 motorland having means for'engaging opposite sides jofa section of a mold, a plurality of other members I operatively connected to a movable part of the motor ,a nd'nhaving means for engaging'an'other section .of the last-mentioned members being operatively mold,- and resilient means connecting the first mentioned members. of one set.

In combination, acreciprocatory motor comprising a cylinder, a plston'therein and a piston rodextendlng through an end of the cylinder, a pair of members pivoted to the cylinder and extending in spaced relation therefrom, said members having means ad- V acent their free ends for engaging a section of a mold, a pair of members operatively pivoted to the piston rod and having means for engaging another section of the mold the free ends or the members pivoted to the cylinder being movably connected respectively to the free ends of the members pivoted'to the piston rod;

6. In combination, a reciprocatory motou comprising a cylinder, a plston therein,- and a piston rod extending through an end of r the cylinder, a pair of members pivoted to the cylinder and extending therefrom in spacedrelation, the lower ends of the membershaving hook portions adapted to engage a section of a mold, a pair of members operatively pivoted to the pistonrod and also pivoted to the'first mentioned members re spectively, said second pair of members having hook portions adapted to engage another section of the mold.

of a mold, comprising'a plurality of arms movably secured. to a stationary member and having portions adapted for engaging one section of the mold, a plurality of arms operatively and movably connected to the first mentioned arms and adapted for engaging the other section of the mold, and means connected to the second group of arms for moving them with respect to the; first mentioned group of arms. 7 7

p In witness whereof, I have hereunto signed my name.

Signed at Akron, in the county of Summit and State of Ohio, U. S. A., this 14th day of December, 1928. V v

, MAX 0.: NELSON.

7. In combination, a reciprocatory motor comprising a cylinder, apiston therein, and a, piston rod extending through an end of the cylinder, a pair of members pivoted to the cylinder and extending therefrom in spaced relation, the lower ends of the members having hook portions adapted'to engage a section of a mold, a pair of members operset being resilientlyconnected.

atively pivoted'to the piston rod and also pivoted to the first mentioned members 'respectively, said second pair of members having hook portions adapted to engage another section of the mold, the members of the first 8. In combination, a suspended v, reciprocatory motor comprising a cylinder, a piston and piston rod, a like motor connected to the piston rod or the first, a'pair of members connected to the cyl nder of the second motor and having means for engaging a section 'of amold, and a pair of arms pivotally connected to the piston rod of the second motor and also pivotally connected to the first mentioned arms respectively, said arms having 'means for engaging another'secti'on of the having means for engaging another section of the mold, and resilient means connecting the. first mentioned members.

IOLA device for separating the sections 

